Fig. 8
From: Macro- and microfeatures of Early Cambrian dolomitic microbialites from Tarim Basin, China
Microscopic features of the spotted and clumpy clotted fabrics in the Xiaoerblak Formation (Cambrian Series 2) of the Sugaitblak section, Tarim Basin, Xinjiang, China. a The spotted clotted fabrics (sd) in Interval I. Some spotted clots are distributed in clusters (clu). The diameter of the clusters is 0.1–0.25 mm. b The clusters (clu) of spotted clots (sd) between laminae, composed of powder crystalline dolomites, in the Interval III. c In the middle of the Interval V, the recrystallization has turned the clump’s micrites to powder crystalline dolomites (th), and the irregular clump was broken into grains, with dolomicrites (mi) between the grains. The places where the dolomicrite have been dissolved were filled with macrocrystalline dolomite (do). d Clumpy clotted fabrics (th) composed of powder crystalline dolomites with distinct dolomicritic outlines, at the bottom of the Interval III. All are photomicrographs of thin sections under plane-polarized light microscope